<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- table表格 -->
      <el-table :data="goodsList" style="width: 100%" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="goods_name" label="商品名称"></el-table-column>
        <el-table-column prop="goods_price" label="商品价格(元)" width="110"></el-table-column>
        <el-table-column prop="goods_weight" label="商品重量" width="80"></el-table-column>
        <el-table-column prop="add_time" label="创建时间" width="180"></el-table-column>
        <el-table-column label="操作" width="150">
            <template scope="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeGoodsById(scope.row.goods_id)"></el-button>
            </template>
        </el-table-column>
      </el-table>

      <!-- 分页功能 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
//引入日期处理库
import dayjs from 'dayjs'

export default {
  name: "List",
  data() {
    return {
      //查询参数对象
      queryInfo: {
        query: "",
        pagenum: 1,
        pagesize: 5,
      },
      //商品列表数据
      goodsList: [],
      //总数据条数
      total: 0,
    };
  },
  created() {
    this.getGoodsList();
  },
  methods: {
    //获取商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get("goods", {
        params: this.queryInfo,
      });
      if (res.meta.status !== 200){
        return this.$message.error("获取商品列表失败");
      }
      res.data.goods.forEach(item=>{
          item.add_time = dayjs(item.add_time).format('YYYY-MM-DD HH:mm:ss')
      })      
      this.goodsList = res.data.goods;
      this.total = res.data.total;
    },
    //pagesize改变触发
    handleSizeChange(newPagesize){
        this.queryInfo.pagesize = newPagesize;
        this.getGoodsList();
    },
    //页码值改变触发
    handleCurrentChange(newPagenum){
        this.queryInfo.pagenum = newPagenum;
        this.getGoodsList();
    },
    //删除商品根据ID
    async removeGoodsById(id) {
      //弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        "此操作将永久删除该商品, 是否继续?",
        "提示",
        {
          cancelButtonText: "取消",
          confirmButtonText: "确定",
          type: "warning",
        }
      ).catch((err) => err);

      //如果用户确认删除，则返回值为'confirm',取消则是'cancel'
      if (confirmResult !== "confirm") return this.$message.info("已取消删除");
      //发起删除请求
      const { data: res } = await this.$http.delete(`goods/${id}`);
      if (res.meta.status !== 200) return this.$message.error("删除失败");
      this.$message.success("删除成功");
      //刷新数据列表，跳回第一页
      this.queryInfo.pagenum = 1;
      this.getGoodsList();
    },
    //跳转到添加商品页面
    goAddpage(){
        this.$router.push('/goods/add')
    }
  },
};
</script>

<style lang="less" scoped>
</style>